Today I visited the astronomy day 2009 in Goirle. It was a nice day where many (both amateur and professional) astronomers gave presentations on what they were currently doing with various astronomy projects.Here's a presentation of a 200mm Newtonian telescoped that has been converted into a F/15 system with 15% obstruction.
And an improvement to SCT's to prevent stray light effectively by using special baffles and diaphragms.
Amateur radio astronomer on detecting the sun at various wavelenghts.
Professional astronomer on roentgen novae.
An update on the current solar activity.
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